RICHMOND, Va., 2015-10-22 — /EPR Retail News/ — CarMax, Inc. (NYSE:KMX) today announced that its board of directors has elected Alan B. Colberg to membership on the board, bringing its total board membership to 12. Colberg will serve on the Audit Committee. Since January 2015, Colberg, 54, has been president, CEO and director of Assurant, Inc., a global…